package 面试;

import java.time.Month;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

class ShareData02{
    private int number = 1;//A:1, B:2, C:3
    private Lock lock = new ReentrantLock();
    private Condition c1 = lock.newCondition();
    private Condition c2 = lock.newCondition();
    private Condition c3 = lock.newCondition();

    public void print05(){
        lock.lock();
        try{
            while (number != 1){
                c1.await();
            }
            for (int i = 0; i < 5; i++) {
                System.out.println(Thread.currentThread().getName() + "\t" + i);
            }
            number = 2;
            c2.signal();
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            lock.unlock();
        }
    }

    public void print10(){
        lock.lock();
        try{
            while (number != 2){
                c2.await();
            }
            for (int i = 0; i < 10; i++) {
                System.out.println(Thread.currentThread().getName() + "\t" + i);
            }
            number = 3;
            c3.signal();
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            lock.unlock();
        }
    }

    public void print15(){
        lock.lock();
        try{
            while (number != 3){
                c3.await();
            }
            for (int i = 0; i < 15; i++) {
                System.out.println(Thread.currentThread().getName() + "\t" + i);
            }
            number = 1;
            c1.signal();
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            lock.unlock();
        }
    }

}

public class SynchronizeAndReentrantLockDemo {
    public static void main(String[] args) {
        ShareData02 shareData02 = new ShareData02();
        new Thread(() -> {
            for (int i = 0; i < 10; i++) {
                shareData02.print05();
            }
        },"AA").start();

        new Thread(() -> {
            for (int i = 0; i < 10; i++) {
                shareData02.print10();
            }
        },"BB").start();

        new Thread(() -> {
            for (int i = 0; i < 10; i++) {
                shareData02.print15();
            }
        },"CC").start();
    }

}
